Bottle or jar for dispensing dental liquids and the like



N. K. GARHART.

BOTTLE on TAR Foa DISPENSTNG DENTAL Lloums AND THE UKE.

APPLICATION FILED AUG.15, |918 Patgnd May 20, 1919.

M Wa ma WU tough and flexible and also preferably trans- UNITED sTATEs ,PATENT onirica.

NATHAN K.' GARHART, 0F WATERTOWN, MASSACHUSETTS.

BOTTLE 0R JAR FOR DISPENSING DENTAL LIQUIDS AND THE LIKE.

Specication of Letters Patent.

Patented May 20, 1.919.

Application sued August 15, 191s. `serial No. 249,987. y

To all 'whom 'it may concern.'

Be it known that I, NATHAN K. GARHART, citizen of the United States, and resident of Watertown, in the county of Middlesex and State of Massachusetts, have invented new and useful Improvements inBottles ord ars for Dispensing Dental Liquids and the llke, of which the following is a specification..

Thisinvention relates to bottles or Jars and more particularly to bottles for dlspensing dental liquids and the like.

In preparing porcelain and other materlals for use in filling teeth it is customary to keep a part of the ingredients in powder form in one bottle and a part of the ingredients in liquid form in' another containerY and not t0 mix the liquid and powder until immediately before using. In mixing the ingredients the liquid is removed from the liquid bottle and gradually added to' the powder by means of a dropper.

The principal objects of the present invention are to provide a-bottle orvj ar which is particularly adapted to contain dental liquid for the aforesaid purpose, which is provided with a dropper or with space for a dropper, which has a cap -constituting a combined covering for the bottle and housing for the dropper, which has a cover for permanently covering the bottle while at the same time permitting the dropper to be inserted into the bottle through an opening therein,

which has a dropper provided with a stopper adapted to seat in aforesaid opening, in which the aforesaid permanent cover is thin and flexible, and in which the housing for the outer portion of the dropper is thin,

parent, for purposes which will appear hereinafter.

For the purpose of illustration I have shown the preferred embodiment of my invention in the accompanying drawings, in which,

Figure 1 is a side elevation of the bottle with the dropper and cap in place;

Fig. 2 is a similar view with the'cap re-4 moved;

'Fig 3 is a top view of the bottle with both the cap and dropper removed;

Fig. 4 is a vertical centralsection of the botitle with the dropper and cap in place; an

Fig. 5 is a view similar to Fig. 4 showing the parts slightly separated.

The preferred embodiment of my invention illustrated in the drawings comprises a bottle B, a cover C, a dropper D and a cap K, the dropper D having a stopper S adapted to seat in an opening O in the cover C. The cover C is'fast to the mouth of the bottle and forms a permanent closure therefor. The cap K is adapted to be threaded on the neck of the 'bottle although it will be understood that it might otherwise be arranged to be detachably secured to the bottle. The upper portionl T of the cap K is constructed differently from the lower portion as will be described hereinafter. K

U 'ljhe cover C i s made suiliciently stiff and rigid to maintain its position and to provide a seat for the stopper but on the other hand it is made sufficiently flexible to permit a certain amount of liexing. Thus if the dropper is carelessly inserted too far or too hard or if the dropper is removed too vio- -lently the elasticity of the cover will prevent the cover from being broken. .Moreover, the flexibility of the cover permits the dropper to be swung laterally to reach the corners of the bottle and if the dropper is so swung either intentionally or accidentally the cover will not crack or break but will return to its normal position. The best ma` terial with which to produce a cover of the character described is celluloid. When the cover C is made of Celluloid it is secured to the mouth of the bottle with an adhesive is also protectedl from evaporation. Certain of the advantages of the cover C could be secured by forming the cover as an integral part of the bottle but it would be impracticable to blow small bottles of this character with the cover C thus formed.

The stopper S is preferably formed intel grally with the forward end of the rubber portion of the dropper D and is preferably tapered so as to be more readily seated in the opening 0 of the cover C. With the tapered stopper formed of medium soft rubber the stopper forms a very tight fit with the thin cover inasmuch as the thin cover depresses the stopper to a considerable depth. Moreover, the stopper can be more readily inserted and removed inasmuch as it engages the cover throughout only a very small area; indeed the stopper may be removed by the thumb and finger while holding the bottle down with another nger on the same hand thereby rendering it unnecessary to use both hands in removing the dropper.

,According to the present invention the lower portion of the cap is made slightly elastic so that it will adapt' itself to slight irregularities in the neck of the bottle but is made relatively heavy so as to maintain its shape and withstand the stress and wear incident to threading it on and off the bottle. The material which I believe to be superior for making the lower portion of the cap is heavy opaque Celluloid, the cap being formed from this material by stamping and pressing operations.

A cardinal feature of the present invention resides in the construction of the upper portion T of the cap K. v My im roved bottles are lintended to be shippe from the factory or distributing house with the dental or other'liquid contained therein and I have found thatv they -frequently receive rough treatment 'in transit. Owing to the fact that the small top T of the cap projects from the bottle in an exposed position there .is danger of its being struck or pressed to one side even when well packed. I therefore propose'to form the top T of such material that if subjected to a blow or pressure it will not break but will yield and at the worst merely be deformed. I have discovered that thin tough transparent celluloid similar to the'thin trough transparent gelatinous material used in medicine capsules possesses characteristics which render it peculiarly adapted to the purpose. The top T is formed by dipping a mold into liquid Celluloid and causing the coating of Celluloid adhering to the mold to harden after which the mold is withdrawn from the top. The top may be secured to the base of the capl in any suitable manner but I prefer to-strike up a flange fromthe base and glue the top to the flange.

With a cap formed as above described lI have found that there is little danger of the' cap bein opened in transit so as to spill the liqui contained inthe bottle. If the top T receives only a light blow or slight pressure it will afterward spring back to its Leoaeoe original shape and position due to its elasticity. If it receives a heav blow or pressure it will be permanently eformed but it will seldom break; indeed even vif pressed almost Hat or crushed far down it will ordinarily not crack. If the entire`cap were made of the thin Celluloid it could not be .tightly secured to the mouth of the bottle other advantages, that it can be seen whether the dropper is in place without removing the cap.

1. In an article of the character described for dispensingdental liquids and the like, the combination of a bottle, a flexible disk cemented over the mouth of the bottle, the disk having l-an opening therein through which a dropper ,may vbe inserted into the bottle, and a dropper having a stopper adapted to seat in said openingwhen the dropper is inserted into said bottle.

2.' In an article of the character described for dispensing dental liquids and the like, the combination of a bottle, a Celluloid disk glued over the mouth of the bottle, said disk having an opening therein, and a dropper having a stopper seating in said openin 3. In an article of the character descri ed for dispensing dental liquids and the like, the combination of a bottle, a disk covering the mouth of the bottle, .the disk having an opening therethrough, a dropper having a stopper near the rear end thereof adapted to close said opening when the dropper is inserted into said bottle, and a cap for said bottle, the cap having a relatively thick st'ifl:l base adapted to connect with the bottle and havin a relatively thin flexible top surrounding that portion of the dropper which projects from the mouth of the bottle, wherey the top rwill yield under blows or pressures and will not readily break.

4. In an article of the character described for dispensing dental liquids andthe like,

tively heavy celluloid adapted to connect with the bottle and having a top of thin transparent celluloid surrounding a portion of the dropper which projects from the mouth of the bottle.

5. In an article of the character described for dispensing dental liquids and the like, the combination of a bottle, a dropper adapted to seat in the mouth of the bottle,

and a cap for said bottle, the cap having a relatively stiff base adapted to connect with 10 the bottle and having a thin tOuOh flexible top surrounding that 1portion of thne dropper which projects from tl e mouth of the bottle. Signed by me at Boston, Massachusetts, this twelfth day of August 1918.

NATHAN K, GARHART. 

